Commercial Real Estate at The Sea Ranch: Coastal Planned Community Rules, the Bane Bill and TSRA Covenants

By Matthew Martinez, Founder, CEO & Managing Broker, Diamond Real Estate Group. California DRE #01869679.

The Sea Ranch is a planned coastal community of about ten miles on Sonoma County’s north coast, above Gualala. It is almost entirely residential. Commercial property here is a short list: the lodge and its restaurant, a few service and community buildings, and the golf course. Two separate rulebooks apply. County coastal zoning is public law, and The Sea Ranch Association’s recorded covenants are private rules enforced by the association and owners. Confirm both before relying on this page.

Who controls the parcel

• County law: Sonoma County’s Local Coastal Plan, certified by the Coastal Commission on November 14, 2024, and the Coastal Zoning Code, Chapter 26C. The plan’s Land Use Element lists Planned Community (PC) zoning for The Sea Ranch.
• State law: Public Resources Code Section 30610.6, the "Bane Bill," and Coastal Commission exclusion orders E-82-2 and E-82-2-A. These set building locations, bulk standards, view management, public access and limits on lots in each unit.
• History: Permit Sonoma’s LCP FAQ explains that Sea Ranch certification was deferred over access disputes and litigation between the developer and the Commission. After a settlement, the Commission certified a Sea Ranch land use plan in 1982.
• Private covenants: The Sea Ranch Restrictions, first recorded May 10, 1965 and last amended in 2013, bind lots and condominiums and are enforced by The Sea Ranch Association (TSRA) and owners.

The Sea Ranch zoning for commercial and visitor uses

County rules: the PC district and the Bane Bill

Precise plan first. Under Article XII, building or zoning permits on PC land require an approved precise development plan, decided under use permit procedures. Uses must match the approved plan.

Mixed use limits. On PC commercial land, secondary dwelling units are allowed if they total less than half the commercial floor area and each is 1,000 square feet or less.

Bulk and design. Buildings or groups are limited to six units or 150 feet in length unless specifically approved. Lot coverage runs 35% to 50%, and all PC uses except a single home need design review. New utility lines go underground.

Height. PC heights are 24 feet for commercial and 16 feet for residential west of Highway 1, but properties listed in the code’s Appendix B follow Bane Bill standards. Those design criteria are enforced by the County.

Design Committee before the County. Policy C-LU-6n bars the County from accepting an application subject to Sea Ranch Design Committee review until the committee has given final approval. Program C-LU-6-P2 calls for a permit processing manual for Sea Ranch.

Lot limits. Policy C-LU-6m and Objective C-LU-6.7 keep the total lots per unit within the Bane Bill and exclusion order limits, so new commercial lots are not a realistic plan.

Private rules: TSRA covenants and the Design Committee

These are contract rules in the recorded Restrictions, not County zoning. A County permit does not override them, and TSRA approval does not replace a County permit.

• Residential use. Private lot areas are for residential use only. The exceptions are a resident artist or craftsperson with no on-site employees or sales and, on one parcel, a resident doctor’s office (Article III).
• Leasing. Owners may lease lots and condominiums, but tenants are bound by all the Restrictions.
• Design review. Exterior construction, alterations and certain tree removal or grading need Design Committee approval. The review fee can be up to $100, and plans not acted on in 45 days are deemed approved. The committee can reject plans it unanimously finds incompatible.
• Committee makeup. It has three members, at least one an architect (Article IV). On request and for a fee, it issues an estoppel certificate on a lot’s compliance that buyers and lenders can rely on.
• Lot splits. Lots under two acres cannot be split, and other splits need Design Committee endorsement (Article IX).

Utilities and lodging

• Water. Permit Sonoma’s referral list names the Sea Ranch Water Company.
• Sewer. Sonoma Water’s Sea Ranch Sanitation Zone covers about 4,600 acres and 626 equivalent dwellings. It runs a Central Plant opened in 1971 and a North Plant opened in 1972, whose flow is treated at Gualala’s plant and irrigates the Sea Ranch Golf Links. Many homes outside the zone use septic, which the Bane Bill ties to regional water board criteria.
• Lodging. Beyond the lodge, nightly stays are mostly whole-home vacation rentals, which Permit Sonoma’s vacation rental page allows in the Coastal Zone with a zoning permit, property manager, TOT number and license.

Transfer tax, business tax and property tax

The County Recorder charges $0.55 per $500, less assumed loans, with no city tax. TSRA assessments run with each lot under Article VI of the Restrictions. Lodging operators collect County TOT; we did not verify the rate. A change of ownership generally triggers Proposition 13 reassessment.

Due diligence that matters at The Sea Ranch

Start with our commercial due diligence checklist, then add:

• Confirm whether the parcel is PC commercial land under an approved precise plan, or a private residential lot.
• Read the Restrictions; a business use on a residential lot is likely barred by covenant even if County rules would allow it.
• Get Design Committee approval before filing with the County.
• Request a Design Committee estoppel certificate on compliance.
• Confirm water service and sanitation zone connection or septic capacity.
• For lodging, read the use permit and any coastal permit conditions.

Questions people ask

Sources & notes

1. Permit Sonoma, Local Coastal Plan certified and LCP FAQ
2. Local Coastal Plan Land Use Element, 2023
3. Chapter 26C, Article XII PC District
4. The Sea Ranch Restrictions, Article III, Articles IV and V and Articles VI to IX (private covenants, published by TSRA)
5. Sea Ranch Sanitation Zone newsletter, 2026
6. Permit Sonoma referral list and vacation rentals
7. Sonoma County Recorder, documentary transfer tax

Note: TSRA documents are private covenants, published by the association rather than a government source. We read the Restrictions as posted, not the separate Sea Ranch Rules, Design Committee rules or any TSRA rental policies. We did not read the precise development plan, the exclusion orders or Appendix B, or map which parcels are commercial. The ten-mile length and the list of commercial buildings are general observations. See also our Sonoma County commercial guide and Sonoma County multifamily guide.

This page is general information, not legal or tax advice. Last reviewed October 2026 by Matthew Martinez.

Related: The Sea Ranch real estate guide · Multifamily property at The Sea Ranch · Commercial real estate services